From what I saw, the woman in that thread is breeding a replacement horse for her mare- not a horse to sell.

If she likes the points on her mare (she's unremarkable to me, but she's not my horse) and wants something with a similar build and temperament to her mare, okay. It's HER replacement foal. I think she should pay a reputable breeder with a good, solid, proven stallion who has shown he improves on the mares for that foal, and get the best quality foal she can out of it. After that- no more babies for Mama, and just let her enjoy being a fat old TB mare while Baby is trained and worked with to replace her when she passes on.

This woman is not a BYB breeding mass quantities of slaughter fodder- she wants one foal out of her much-loved mare to take her place. It seems awfully harsh to be jumping all over her- why doesn't someone just offer her some practical breeding advice or point out why she's better off buying a replacement? If the only advice she gets is bad advice, that's what she's going to use.